<form>
<p><input type="checkbox" name="led0" %LED0%>LED 0<br/>
<input type="checkbox" name="led1" %LED1%>LED 1<br/>
<input type="checkbox" name="led2" %LED2%>LED 2<br/>
<input type="checkbox" name="led3" %LED3%>LED 3</p>
<p><input type="submit" value="Update!"/></p>
</form> 
